Size of 2nd pane

When I open a 2nd pane with a commentary, I usually have to resize it. I don't want the commentary to take up half of my screen. However, if the application is shut down, the original size will be shown again and I have to resize again. Is that a bug, on intention or am I just missing something?

When I open a 2nd pane with a commentary, I usually have to resize it. I don't want the commentary to take up half of my screen. However, if the application is shut down, the original size will be shown again and I have to resize again. Is that a bug, on intention or am I just missing something?